isbn: fix cases where masking fails
- Fallbacks to a canonical ISBN value in case the hyphenation/masking fails.
Coordination:
Placed in "Work in progress" because there is a rebase to be done and versioning to adjust. But it looks good to me! Once that's done, we can have another review or skip to merge as you wish @slint .
Coordination: bumpety bump
Coordination: @fenekku @slint shall we move this PR to To Review or ask @ntarocco for a second reviewer aprovement !
I think here it's less a review than a conflict resolution rebase that is missing. Since that's usually better done by the original PR submitter, I would leave it as work in progress. If someone other than @slint has time and feels confident they can resolve the conflict that could be done too. Let's say we circle back around to this in 1 week?